Moyer Diebel MD-44, MD-66 MD-44andMD-66RackConveyorDishwashers

iii

MD-44 and MD-66 Rack Conveyor Dishwashers 

Revisions to this manual...........................................................................................................i

Limited Warranty ......................................................................................................................ii

Model Descriptions ...................................................................................................................iv

Installation ....................................................................................................................1

Receiving ............................................................1

MD-44 Direction Field Conversion.......................2

Plumbing Connections.........................................10

Drain Connections ...............................................11

Ventilation ............................................................11

Electrical Connections .........................................12

Chemical Signal Connections..............................14

Vent Fan Signal Connection ................................14

Running & Table Limit Switch Connections .........14

Curtain Locations.................................................15

Door Safety Switches ..........................................16

Scrap Screens .....................................................17

Installing Spray Arms ...........................................18

Installing the Pawl Bar .........................................22

Installing the Curtains ..........................................23

Initial Start-Up Check List ....................................24

Operation ..................................................................................................................... 25

Operation .............................................................25

Cleaning and Maintenance ..................................27

Troubleshooting ...................................................30

Service Replacement Parts ..........................................................................................31

Solid State Control Module Operation and Troubleshooting ........................................81

Electrical Schematics ...................................................................................................93

Table of Contents

Contents

Main Installation/Operation Manual with Service Replacement Parts Manual P/N 114725 rev. A Dishwasher serial no. www.moyerdiebel.com Rack Conveyor Dishwasher ATTENTION: BUSINESS REPLY MAIL ATTENTION: IMPORTANT IMPORTANT Model Serial # WARRANTY REGISTRATION CARD This Card Must Be Returned to Validate Machine Warranty: This Card Must Be Returned to Validate Machine Warranty: Page ii Limited Warranty LIMITED WARRANTY Warranty of Machines: iii Table of Contents MD-44andMD-66RackConveyorDishwashers Model Descriptions Receiving 2 ATTENTION Right to Left Direction of Operation Shown Parts Needed for Conversion (Supplied by Others) Page Page Page 10A 10B 12A 12B 12C 46-1/2" 31-1/2" Page MD-44 Direction Field Conversion MD44 JUNCTION BOX WIRING DIAGRAM B702285/0 16 17 10 Hot Water Connections Utilities Drain Connections Ventilation Connections Electrical Connections 12 ATTENTION 13 Electrical Connections L1 L2 L3 GRD 14 Chemical Signal Connections Vent Fan Signal Connection Running Signal and Table Limit Switch Connections 15 Curtain Locations NOTE: Pump Intake Screen and Dual Float Switch Door Safety Switches Scrap Screens Installing the Lower Spray arm Assembly Installing the Upper Spray Arm Assembly Upper Wash Arm Assembly Components Upper Wash Arm Rear Support 3 Installing the Upper Spray Arm Assembly (continued) Upper Wash Arm 55 Front Supports Upper Wash Arm Front Guide Pin Installing the Upper Spray Arm Assembly Installation Installing the Pawl Bar Installing the Curtains Check list Control Panel Operation AB C E F D Operation Operation 27 Daily or every 2 hours of operation DO NOT STRIKE SCREENS OR BASKETS AGAINST SOLID OBJECTS Cleaning 28 Cleaning At the End of the Day De-liming 29 Weekly Maintenance Monthly Yearly Condition Cause Solution Troubleshooting Service Replacement Parts Illustrations Page Control.Panel Page Page Control.Cabinet Item No. Part No. Description Qty. Page Page Page Page Page Page Page Page MD-66.Prewash.Tank,.Door.and.Curtains L-R.Direction.Shown Page Fill.Piping Page Page Page Page Page Page Page Page Page MD-66.Track.Assembly Page MD-44.Pawl.Bar.Assembly Page MD-66.Pawl.Bar.Assembly Page Page Page Page Page Page Page Wash Page MD-66.Pump.Installation Prewas Wash h Page Electric.Booster.Assembly.-.40F.and.70F.Rise .Electric.Booster.Assembly.-.40F.and.70F.Rise Item No. Part No. Description Qty. Page Page Page Page Page Page Page Page 82 Input Section Output Section RCM Status/Jumpers (RCM) Rack Control Module (RCM) Electrical Schematic 702260 RCM Inputs Rack Control Module (RCM) (RCM) H1 Rack Control Module (RCM) Operation Input Section Red Indicator Lights NOTE: Whenever a RED input light is ON its corresponding input circuit is CLOSED. ATTENTION: 84 Output Section NOT USED NOT USED Output Section Green Indicator Lights 85 RCM Status/Jumpers 86 Rack Control Module (RCM) Indicator Lights RCM Status/Jumpers RCM Status/Jumpers = Indicator ON = Indicator OFF = Indicator ON = Indicator OFF 87 Plate 3: Plate 4: 88 Plate 6: Plate 5: 89 Door Opened while Dishwasher is In-cycle Plate 7: Plate 8: Table Limit Switch Activated while Dishwasher is In-cycle 90 Jam Switch Activated while Dishwasher is In-cycle Stop Switch Pressed while Dishwasher is In-cycle Plate 9: Plate 10: 91 Float Operation During Initial Fill Plate 11: 92 Front Panel Power Switch Turned Off while Dishwasher is In-cycle Plate 12: